The first written trace of the city was found in 558 as Leodicum or Vicus Leodicus. From 717, Liege was made the seat of a bishopric and became a cultural centre in the Middle Ages. These bishops ruled the city as Prince-Bishops until the 1790s. In the French Revolution, the cathedral was damaged, partially burned down and then completely detroyed. In the 19th century, the city lived on coal-mining, steelindustry and trade. The region was the second biggest economic center in Europe after the UK in the 19th century.

Today Liege is a major educational hub, with a university and many high schools. It is a crossing point in Europe, Liège has the second biggest inner harbour and the 8th biggest cargo airport in Europe (Liège Airport). The city, that had a lot of problems since the 1970s because of the end of the steel industry and coal-mining, is now having a good economy thanks to the logistics and high tech industry (biotechnology, space industry, IT).